The next subject proposed for examination was Original Sin. The Emperor showed the greatest anxiety to secure a delay, and at a hint from him several of the Spanish bishops tried to postpone a decision by prolonging the discussions and by raising the question of the Immaculate Conception of the Blessed Virgin. That the Fathers of Trent were not opposed to this doctrine is clear enough from the decrees they formulated, but the majority of them were of opinion that purely domestic controversies among Catholic theologians should be left untouched. In the fifth general session (17th June 1546) it was defined that by his transgression of the commandment of God the head of the human race had forfeited the sanctity and justice in which he had been created, and had suffered thereby in both soul and body, that in doing so he had injured not merely himself but all his descendants, to whom Original Sin is transmitted not by imitation merely but by propagation, that the effects of this sin are removed by the sacrament of Baptism, necessary alike for adults and infants, and that the concupiscence, which still remains in a man even after baptism has produced its effects, is not in itself sinful. It was declared, furthermore, that in the decrees regarding the universality of Original Sin it was not intended to include the Blessed Virgin or to weaken the binding force of the decrees issued by Sixtus IV. regarding her Immaculate Conception. The way was now cleared for the question of Justification.[1] This was the doctrine on which Luther first found himself in disagreement with the Church, and which he put forward in his sermons as the foundation of his new gospel. The importance of the subject both in itself and in the circumstances of the time cannot be exaggerated, nor can it be contended that the Fathers at Trent failed to realise their responsibilities or to give it the attention it deserved. Had they done nothing else except to give to the world such a complete and luminous exposition of the Catholic teaching on Justification their meeting would not have been held in vain. In the 6th public session (13th January 1547), at which there were present besides the legates, ten archbishops, forty-two bishops, two procurators, five generals of religious orders, two abbots and forty-three theologians, it was defined that, though by the sin of Adam man had lost original justice and had suffered much, he still retained free-will, that God had been pleased to promise redemption through the merits of Jesus Christ, and that baptism or the desire for baptism is necessary for salvation. The decrees dealt also with the method of preparing for Justification, with its nature, causes, and conditions, with the kind of faith required in opposition to the confidence spoken of by the Reformers, with the necessity and possibility of observing the commandments, with the certainty of Justification, perseverance, loss of Grace by mortal sin, and with merit.